Correct answer
Loss of grip.
It causes loss of grip when a water layer separates the tyre from the road because the tyre cannot clear it sufficiently. Standing water can cause it even when rain is not currently falling. Speed, water depth and tyre condition affect the risk. It does not increase grip and is not loss of visibility: rain may reduce visibility, but that is a different effect. Adapt speed and keep tyres in good condition.
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Increased grip.
Only loss of visibility, with full grip retained.
Loss of grip.
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